PPLN has application in a number of different types of spectroscopy PPLN also has demonstrated wonderful potential in enhancing
Temperature/Wavelength: Since the time period sort by periodical poling compensates only the design wavelength at a particular temperature, temperature/wavelength modifying is required for performance optimization. Instance tuning curve (Normalized performance vs. wavelength) is proven in the figure nine down below.
Specially with regards to our area of interest, the PPLN crystals are periodically poled, plus the duration of poling should be optimised to ensure the best performance of your source, maximizing the effectiveness of your technology.
PPLN has a significant index of refraction that brings about a ~14% Fresnel reduction for each uncoated surface area. To extend transmission by way of our crystals, the crystal input and output sides are AR coated, Consequently cutting down the reflections at Every floor to below 1%.
They exhibit good homogeneity about significant volumes and also have a higher harm threshold, but are hygroscopic and possess a reduced nonlinearity.
Our crystals are Employed in an array of applications, which includes many kinds of nonlinear frequency conversion and electro-optics, but will also quantum technologies.
These focussing circumstances apply to pulsed lasers also, but mainly because of the substantial peak powers, the place dimension requirements are much less sensitive. (Know about the crystal harm threshold In order not to emphasis far too tightly.)
The poling pattern is lithographically described and really customizable enabling crystals for use in a variety of programs that call for wavelength conversion.
MgO:PPLN is a lovely selection for the reduced-Expense, compact watt-amount lasers that our analysis team has labored on for laser shows and biomedical applications1,3. This is the result of MgO:PPLN fabrication to generate extended crystals with adequately big 0.
flux-developed KTP and RTP with its substantial nonlinearity, also in variants with large gray monitoring resistance
flux-developed KTP and RTP with its high nonlinearity, also in variants with substantial gray tracking resistance
Notice that even when the nominal depth is under the nominal harm threshold, there might be problems as a consequence of fluctuations within the beam electricity or click here local intensity (e.g., if a beam profile has “very hot spots�?, or due to isolated defects in a crystal, that are more sensitive compared to regular crystal substance.
In the case of ultrashort pulses the higher group velocity mismatch enforces the usage of a shorter crystal, which demands high optical intensities for just a offered conversion performance.
By picking out the right poling interval, the QPM wavelength is often altered to match certain application necessities. This flexibility in wavelength conversion enables productive and precise tuning of created or transformed frequencies for spectroscopic investigations.